关于胸内压的错误叙述是（） A.等于"肺的回缩力" B.有助于静脉血和淋巴回流力 C

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填人一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号的相应位置上。

In this unlikely place, researchers are putting the seeds from flowering plants and trees in a sleeplike state. Many years from now, other workers will wake the sleeping seeds up to plant them 小题1:they are most needed. These seeds are小题2:the legendary Rip Van Winkle, who fell asleep under a tree and woke up 20 years later.

The small farm, called the Greenbelt Native Plant Center, is part of a global effort to save小题3:(threaten) plants and trees. Around the world, native plants are being crowded out by invasion newcomers. Native plants have less room to grow now小题4:a result of the growth and spread of cities. And global warming is making some places hotter, drier, or different from小题5:native plants are used to.

Experts used to think小题6:possible to protect big-city plants such as American bittersweet because growth space is limited in urban environments. Crowding increases competition between natives and invaders, and the latter often win the battle.

小题7:, scientists have found ways小题8:fighting back. So far, workers at the Greenbelt Native Plant center小题9:(gather) seeds from about 300 of those plants and put them in a sleeplike state. When小题10:(plant) in the future ,these seeds could help restore damaged parkland and forests.

下列位于两条河流交汇处的城市有（　　）

A．上海

B．重庆

C．南京

D．攀枝花

关于肾癌CT增强扫描的描述，不正确的是（）

A.有助于明确病变存在

B.有助于确定病变范围

C.有助于与其他占位病变鉴别

D.有助于发现肾静脉和腔静脉癌栓

E.皮质期未发现明显病变可除外肿瘤

关于胰腺癌的描述正确的是（）

A.多数为腺泡癌

B.胰体或胰尾部发生率高于胰头部

C.较早出现围胆管浸润现象

D.早期即出现持续性腰背部疼痛

E.以上均不是

所谓按炉送钢制度就是从铸锭开始，到（）都要按炉罐号转移，堆放和管理，不得混乱。

A.开坯

B.成品钢材

C.成品检验

D.精整入库